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Q:

exhause valve on 1990 Volvo 740

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
does the 740 has exhause valve seal like intake seal
(1) Answer
some of the heads do not have any seals on the exhaust side because of the close tolarences and because of the exhaust pressure keeps the oil away from the valve.

you need a shop to check for you.

what is your concern that you are asking about this??

Roy